气候变化领域集成服务门户(CCPortal): Benchmarking large-scale evapotranspiration estimates: A perspective from a calibration-free complementary relationship approach and FLUXCOM

CCPortal

DOI	10.1016/j.jhydrol.2020.125221
	Benchmarking large-scale evapotranspiration estimates: A perspective from a calibration-free complementary relationship approach and FLUXCOM
	Ma, Ning; Szilagyi, Jozsef; Jozsa, Janos
通讯作者	Ma, N (通讯作者)
发表日期	2020
ISSN	0022-1694
EISSN	1879-2707
卷号	590
英文摘要	Accurately quantifying large-scale terrestrial evapotranspiration (ET) remains hampered by poor parameterization of the physical processes that relate to ET. Previous studies suggested that the calibration-free complementary relationship (CR) method that requires only routine meteorological data performed better than main-stream atmospheric reanalyses, land surface or remote sensing models in estimating large-scale ET. Here we simultaneously evaluate the latest machine learning-based upscaling of eddy-covariance measurements (FLUXCOM) and the CR estimates against the water-balance derived ET rates of 18 large Hydrologic Unit Code-2 (HUC2) and 327 medium HUC6 basins across the conterminous United States. Overall, CR and FLUXCOM perform comparably in representing the multiyear mean and temporal variations in annual ET at both, HUC2 and HUC6, scales for the 1979-2013 period. Such equally good skills also hold true for the 2003-2015 period, during which FLUXCOM was driven solely by remote sensing data. However, the CR generally captures the longterm linear tendencies in annual ET rates somewhat better than FLUXCOM. Because of its minimal data requirement, the calibration-free version of the CR may continue to serve as a benchmarking tool for large-scale ET simulations.
关键词	TERRESTRIAL EVAPOTRANSPIRATION DATA SETS WATER EVAPORATION PRECIPITATION PRODUCTS MACHINE FLUXES MODEL SOIL
英文关键词	Complementary relationship; FLUXCOM; Large-scale evapotranspiration; Benchmarking; Water balance
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000599754500023
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259912
推荐引用方式 GB/T 7714	Ma, Ning,Szilagyi, Jozsef,Jozsa, Janos. Benchmarking large-scale evapotranspiration estimates: A perspective from a calibration-free complementary relationship approach and FLUXCOM[J]. 中国科学院青藏高原研究所,2020,590.
APA	Ma, Ning,Szilagyi, Jozsef,&Jozsa, Janos.(2020).Benchmarking large-scale evapotranspiration estimates: A perspective from a calibration-free complementary relationship approach and FLUXCOM.JOURNAL OF HYDROLOGY,590.
MLA	Ma, Ning,et al."Benchmarking large-scale evapotranspiration estimates: A perspective from a calibration-free complementary relationship approach and FLUXCOM".JOURNAL OF HYDROLOGY 590(2020).